Measures of Center & Variability

What is the mode for this set of data below?

11.17, 12.33, 11.82, 10.83, 10.97, 11.43

• 11.17

• no mode

• 10.83

• 12.33

What is the range for the data set below?

11.17, 12.33, 10.83, 10.97, 11.43, 11.82

• 23.16

• 0.65

• 11.43

• 1.5

What is the median for the data set below?

11.17, 12.33, 10.83, 10.97, 11.43, 11.82

• 11.3

• 11.17

• 11.43

• 11.4125

What is the mean for the data set below?

11.17, 12.33, 10.83, 10.97, 11.43, 11.82

• 11.17

• 11.3

• 13.71

• 11.425

The mean absolute deviation is 0.1. What conclusions can be drawn?

• The data points are close to the median?

• The data points are far from the median?

• The data points are far from the mean?

• The data points are close to the mean?

Determine the IQR of the data below.

11, 13, 16, 17, 8, 10, 14, 14, 17, 14

• 9

• 14

• 5

• 10

Which of the following statements is NOT true?

• Class B has a higher median number of siblings.

• Class B has a greater variability/range in the number of siblings.

• Both Class A and Class B have equal IQRs.

• Class A has a maximum number of five siblings.

The average test scores for Ms. Green's history class has a mean absolute deviation of 12. What conclusion can you make about the average test scores for her history class?

• The average of the test scores in the class is a 12.

• The mean absolute deviation is high, so the test scores all must be high.

• The mean absolute deviation score of 12 means that the test scores were very spread out.

• The mean absolute deviation score of 12 means that the test scores were very close together.

Which if the following statements is true about the data below.

11, 7, 4, 10, 9, 12, 3, 9

• There is no mode for this set of data.

• The range for this set of data is 9.

• The median is 9.5.

• The mean of the data is 8.

What is the value of Q1?

• 19

• 21

• 18

• 15